Aristodemos Pnevmatikakis Lampros Dermentzoglou Aggeliki Arapoyanni Analog-to-Digital Interface for Heterodyne Receivers. 57-72 2002 11 Journal of Circuits, Systems, and Computers 1 http://dx.doi.org/10.1142/S021812660200029X db/journals/jcsc/jcsc11.html#PnevmatikakisDA02